/* Copyright (c) 1987, 1993                                                  *//* The Regents of the University of California.  All rights reserved.        *//*                                                                           *//* Redistribution and use in source and binary forms, with or without        *//* modification, are permitted provided that the following conditions        *//* are met:                                                                  *//* 1. Redistributions of source code must retain the above copyright         *//*    notice, this list of conditions and the following disclaimer.          *//* 2. Redistributions in binary form must reproduce the above copyright      *//*    notice, this list of conditions and the following disclaimer in the    *//*    documentation and/or other materials provided with the distribution.   *//* 3. All advertising materials mentioning features or use of this software  *//*    must display the following acknowledgement:                            *//*      This product includes software developed by the University of        *//*      California, Berkeley and its contributors.                           *//* 4. Neither the name of the University nor the names of its contributors   *//*    may be used to endorse or promote products derived from this software  *//*    without specific prior written permission.                             *//*                                                                           *//* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND   *//* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE     *//* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE*//* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE  *//* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL*//* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS   *//* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)     *//* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT*//* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY *//* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF    *//* SUCH DAMAGE.                                                              */#ifdef SHOW_SCCSIDSstatic char sccsid[] = "@(#)getopt.c	8.1 (Berkeley) 6/4/93";#endif#include "config.h"#ifndef HAVE_GETOPT#ifndef __STDC__#define const#endif#include <stdio.h>#include <stdlib.h>#include <string.h>/* Get option letter from argument vector                                    */int opterr = 1;		/* if error message should be printed                */int optind = 1;		/* index into parent argv vector                     */int optopt;		/* character checked for validity                    */int optreset;		/* reset getopt                                      */char	*optarg;	/* argument associated with option                   */#define	BADCH	(int)'?'#define	BADARG	(int)':'#define	EMSG	""int getopt(int nargc, char * const *nargv, const char *ostr) {    static char *place = EMSG;		/* option letter processing          */    register char *oli;			/* option letter list index          */    char *p;	    if (optreset || !*place) {		/* update scanning pointer           */	optreset = 0;	if (optind >= nargc || *(place = nargv[optind]) != '-') {	    place = EMSG;	    return(EOF);	}	if (place[1] && *++place == '-') {	/* found "--"                */	    ++optind;	    place = EMSG;	    return(EOF);	}    }					/* option letter okay?               */    if ((optopt = (int)*place++) == (int)':' || !(oli = strchr(ostr, optopt))) {	/* If the user didn't specify '-' as an option, assume EOF.          */	if (optopt == (int)'-') return(EOF);	if (!*place) ++optind;	if (opterr && *ostr != ':') {	    if (!(p = strrchr(*nargv, '/'))) p = *nargv;	    else ++p;	    fprintf(stderr, "%s: illegal option -- %c\n", p, optopt);	}	return(BADCH);    }    if (*++oli != ':') {			/* don't need argument       */	optarg = NULL;	if (!*place) ++optind;    } else {					/* need an argument          */	if (*place) optarg = place;		/* no white space            */	else if (nargc <= ++optind) {	        /* no arg                    */	    place = EMSG;	    if (!(p = strrchr(*nargv, '/'))) p = *nargv;	    else ++p;	    if (*ostr == ':') return(BADARG);	    if (opterr) fprintf(stderr, "%s: option requires an argument -- %c\n", p, optopt);	    return(BADCH);	} else optarg = nargv[optind];		/* white space               */	place = EMSG;	++optind;    }    return(optopt);				/* dump back option letter   */}#endif